Thanks! That tunnel was a bit too narrow for some of the larger engines, so it had to be replaced. While I like the new tunnel, it does lack some of the character of the original.
Those are clay chimney flues. They worked pretty well with the small amount of soil I had over the top of them, but I don't think I would recommend using them as they are a bit fragile. I ultimately ended up replacing them with cinder blocks and concrete steps stones.
![ประสบการณ์ จ้าง Developer ที่ผมจะไม่มีวันลืม [ภาค1]](http://i.ytimg.com/vi/bzivN4KDg-k/mqdefault.jpg)
I love that tunnel!
Thanks! That tunnel was a bit too narrow for some of the larger engines, so it had to be replaced. While I like the new tunnel, it does lack some of the character of the original.
What product did you use for that tunnel?
Those are clay chimney flues. They worked pretty well with the small amount of soil I had over the top of them, but I don't think I would recommend using them as they are a bit fragile. I ultimately ended up replacing them with cinder blocks and concrete steps stones.